[quote=@Valiance]
<Snipped quote by Meta>

Just got out of lab. Yeah?
[/quote]

Memories are mostly not concrete. Our brain takes bits and pieces and fills in the gaps with information it knows. Often in cases of deja vu, we had a hole in our memory of an experience or dream, and when we encounter it in the real world, that hole is filled by what we just experienced, making us think we had seen it before.